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 Technical Data Sheet 

 

Issued August 28, 2011

 

EPIKURE Curing Agent 3389

 

 

Product Description

 

EPIKURE™ Curing Agent 3389 is a very low viscosity modified amine designed for use with EPON™ Resin 896 to give formulations that offer a superior degree of chemical resistance.  The cured system demonstrates superior mechanical strength and high heat deflection temperature (HDT) even without post cure at elevated temperatures. 

 

It is important to note that only the combination of EPON Resin 896 with EPIKURE Curing Agent 3389 provides the highest chemical resistance.  Do not modify this system with additional diluents or by adding solvents or modifiers because this will decrease its performance.  EPON Resin 896 and EPIKURE Curing Agent 3389 are designed to work together to provide low viscosity and superior chemical resistance for the application areas listed below.

 

Application Areas/Suggested Uses

  • Secondary containment
  • Industrial flooring
  • Tank linings
  • High chemical resistance applications for food processing1, food storage1,
    waste water, pulp & paper; as well as, liquid coatings for pipe and petrochemical areas

Benefits

  • Superior chemical resistance when used with EPON Resin 896
  • Low viscosity
  • High reactivity even down to 5 °C

Sales Specification

Property

Units

Value

Test Method/Standard

Viscosity at 25°C

mPas*

7 - 23

DIN 53015

Color

Gardner

3 max.

ISO 4630

 

 

 

 

*  1mPa.s = centipoise

 

Typical Properties

Property

Units

Value

Test Method/Standard

Amine Equivalent Weight

g/eq

38

Calculated

Density at 22°C

lb/gal

8.3 – 8.6

ASTM D742

Recommended use level with EPON™ Resin 896

phr

20

Calculated

Physical Form

 

Clear liquid

 

 

 

 

 

 

1) This product may be suitable for use in “indirect” food contact applications regulated by FDA 21CFR175.300.  The FDA regulations must be consulted to determine the suitability of substances for use in specific “indirect” food contact applications.  The responsibility for determining the overall compliance with applicable food additive/contact regulations is with the company manufacturing the final product and/or the person placing that product in contact with food.

  

Performance Properties

Table 1 / Low Viscosity, high chemical resistance system:

   EPIKURE™ Curing Agent 3389 with EPON™ Resin 896

  

ASTM

Units

System

  EPON Resin 896

 

pbw

100

EPIKURE Curing Agent 3389

 

pbw

20

 

 

 

 

 Handling Properties @ 25°C

 

 

 

  Initial mix viscosity

D1545

cP

<600

  Shyodu Gel Time (100 grams)

 

minutes

11

  Time to Peak Exotherm (100 grams)

 

minutes

23

  Peak Exotherm Temperature

D2471

°C

252

 

 

 

  Coating Properties 1

 

 

 

  Thin Film Cure Time (circle recorder)

 

 

 

 

 

 

 

     Tack Free Time (Type II, 25°C)

D1640

Hrs

2

     Cure Through Time (Type IV, 25°C)

D1640

Hrs

5

 

 

 

 

     Tack Free Time (Type II, 5°C)

D1640

Hrs

6

     Cure Through Time (Type IV, 5°C)

D1640

Hrs

14

 

 

 

 

   Film appearance 2

 

 

Hazy

 

 

 

 

  Direct impact resistance

D2794

In-lbs

20

  Reverse impact resistance

D2794

In-lbs

10

 

 

 

 

  Cured State Properties 3

 

 

 

  Heat Deflection Temperature

D648

°C

71

  Tensile Strength

D638

psi

9,000

  Tensile Modulus

D638

ksi

501

  Flexural Strength

D790

psi

19,000

  Compressive Strength

D695

psi

18,000

  Hardness

D2240

Shore D

72

 

 

 

 

Chemical Resistance 4

 

 

 

  Water at 70°C

 

%w

 < 5

  DETA / Water (50/50 w/w)

 

%w

< 5

  Gasoline

 

%w

< 5

  Skydrol

 

%w

< 5

  Aromatic solvents

 

%w

< 5

  Alcohols

 

%w

< 5

  Ester / Ketones

 

%w

< 5

  10% Acetic acid

 

%w

< 10

  25% Nitric acid

 

%w

< 5

  36% Sulfuric acid

 

%w

< 5

  10% Lactic acid

 

%w

< 5

  Brake Fluid

 

%w

< 5

 

 

 

 

1

Clear film applied at 25 °C to cold rolled steel panels at 3-5 mils DFT. Cured for 7 days at 25 °C.

 

2 The low gloss of this system is due to its higher reactivity versus standard epoxy systems.

3 1/8" thick test castings prepared at 25 °C. System A was cured for 7 days at 25 °C.

4 Percent weight gain after 3 months immersion and 5 days recovery at 23 °C.

  

 Chemical Resistance  

Comparison of a standard epoxy system (EPIKOTE™ Resin 357 with EPIKURE™ Curing Agent
F 205) and the low viscosity, chemical resistant system demonstrates the superior performance of EPON™ Resin 896 / EPIKURE™ Curing Agent 3389 after four weeks exposure to different chemicals (Graph 1). 

 

EK 3389 and EP 896 Graph 1

Graph 1:  Shore D hardness after exposure of a standard epoxy system (in red) versus the low viscosity, chemical resistant epoxy system (in blue). Values were measured after four week immersion in the chemical. 100 = 100% of the original Shore D hardness. 50 = 50% of the original Shore D hardness.  

  

Safety, Storage & Handling

Please refer to the MSDS for the most current Safety and Handling information.

 

Please refer to the Hexion web site for Shelf Life and recommended Storage information.

 

Exposure to these materials should be minimized and avoided, if feasible, through the observance of proper precautions, use of appropriate engineering controls and proper personal protective clothing and equipment, and adherence to proper handling procedures. None of these materials should be used, stored, or transported until the handling precautions and recommendations as stated in the Material Safety Data Sheet (MSDS) for these and all other products being used are understood by all persons who will work with them.  

 

Questions and requests for information on Hexion, Inc. ("Hexion") products should be directed to your Hexion sales representative, or the nearest Hexion sales office. Information and MSDSs on non-Hexion products should be obtained from the respective manufacturer.

 

Packaging

Available in bulk and drum quantities.

 

Contact Information

 For product prices, availability, or order placement, please contact customer service:

www.hexion.com/Contacts/ 

® and ™ Licensed trademarks of Hexion Inc.

DISCLAIMER

The information provided herein was believed by Hexion Inc. (“Hexion”) to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product and to determine the suitability of the product for its intended use. All products supplied by Hexion are subject to Hexion’s terms and conditions of sale. HEXION MAKES NO WARRANTY, EXPRESS OR IMPLIED, CONCERNING THE PRODUCT OR THE MERCHANTABILITY OR FITNESS THEREOF FOR ANY PURPOSE OR CONCERNING THE ACCURACY OF ANY INFORMATION PROVIDED BY HEXION, except that the product shall conform to Hexion’s specifications. Nothing contained herein constitutes an offer for the sale of any product.

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